Window.



Patented lune il, IQDI- G. P. AASE.

WINDOW. (Application mea'Nov. 5, 1900.)

No. 676,17l.

(No Ilong.)

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UNITED STATES PATENT OEETCE.

GEORG PRAHL ZAASE, OE'EERGEN, NORWAY.

WINDOW.

SPECIFICATION forming part of Letters Patent No. 676,171, dated June 11, 1901.

Application filed November 5,1900. Serial No. 35,507. (No model.)

To all whom, it may concern:

Be it known that I, GEORG PRAHL AAsE, a subject of the King of Sweden and Norway, residing at the town of Bergen, Norway, have invented new and useful Improvements in Windows, of which the following, taken in connection .with the accompanying drawings, is a specification.

My invention relates to improvements in windows; and it consists in the arrangement that the window-frames, by means of central pivots,- are mounted between a pair of arms and providedwith a projecting piece fitting into recesses in the casing and in the post, so as to allow the window to be closed with either side turned inward.

In the accompanying drawings, Figure l is an elevation of a window.' Fig. 2 is a section on the line so in Fig. 1. Fig. 3 is across-section on the line y y in Fig. l, showing the lefthand frame partially turned and ready to be closed, with the other side turning inwardly. Fig. t is a cross-section on the same line, showing both frames closed, with the outside turned inward.

The window-frames A are each mounted in a frame B, which by means of hinges Aare secured to the casing. The frames B haveon their free ends ianges or lugs b, which in the closed position of the window fit into recesses c in the casing and in the crosspiece C. The said lugs b are provided with an aperture to receive a pivot d, fastened to the upper and lower sides of the frames A,and by this means the frames are allowed to turn freely in the frames B, so as to be able to close the frames A with either side turned inward, as desired. In order to retain the frames A in position when closed normally,the said frames are provided with a lug or projection e, fastened to the side of the frames next to the frame B, and the lug e is arranged to fall into a recess fin the casing, so that it will become locked' by the frame B,(see Fig. 3,)Ycovering said recess. The post is also provided with recesses g g, so as to allow the frames A to be closed the other Way about.

Owing to the fact that the 'window-frames are mounted pivotally in frames B,which have a vertical portion and two horizontal portions located at the ends of the vertical portions,

thus substantially extending around the edges of about one-half of the window, there is an absolute surety of the pivotal connection betweenthe window and frame B being held or retained against spreading, of which there is a tendency when the frame B is swung on its pivot, as the weight of the window,when in a position as shown at the left in Fig. 2, would be entirely on the lower horizontal arm. This weight, however, in the construction herein shown is borne by. the hinges of the frame B, and as the frame is an integral one any movement or a tendencyof movement of the lower horizontal arm on account of the weight would cause the upper arm to have a corresponding movement, thus retaining the relative positionsl at the pivot-point. Furthermore, by the form of frame B shown there is no liability of an injury to the window-sash itself in moving the sash to the position shown in Fig. 3. W'ere the horizontal arms mounted independently on the windowframe and having a pivotal movement should either of thearms bind against the windowframe and pressure be applied to the sash to move it outward, there would be great liability ofthe sash being sprung or otherwise damaged. As, however, the frame B is pivotally connected with the window-frame with the pivotal connection on the vertical portion and the horizontal arms are formed integral therewith, both arms must move in unison, thereby preventing such springing of the sash.

The frames A might be locked by any ordinarymeans. (Not shown.)

' By this construction of windows the great advantagev is'obtained that cleaning and polishing can be done all from the inside, whereby the danger connected with the doing of such work from the outside is wholly avoided.

Having now particularly.described and asoertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is- The combinationwith a Window-casing and a sash therefor, of a E-shaped frame pivotally connected to said casing at one side of the sash-opening, pins projecting inwardly from the free end portions of the frame, said pins forming central pivotfpoints for the sash,

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In witness whereof have hereunto'set my hand in presence of two"l Witnesses.`

GEORG PRAHL AASE.

Witnesses:

S. K. DAHL, A. LOHMAN. 

